DAR ES SALAAM, June 29 -- I HAVE decided to start a little series called The Family Files. Why? Because family is where every society begins. Before there are judges, police officers or Members of Parliament, there is a family. It is the first institution any of us will ever belong to.

So, over the next few weeks, well open a different Family File. Well talk about adultery, enticement, seduction and other family torts that many people have never heard of, yet they exist in our law. Today, lets begin with adultery. Lets start with something we all know. Marriage is a contract.

But unlike an ordinary contract for buying land or selling a car, this one carries something far more valuable. It carries interests. The interest to enjoy your sp...